Incandescent burner.



' Noa-38,746. r A K W.'PARPREY.

, INGANDESCENT BURNER.

APPLICATION FILED JAN. 15, 1902.

No 1mm..

mlm! y anmmww nii fuif ru nf TTORNE PATBNTED SEPT. 8, :1903.

(Shown in Fig. 2.) This tip is thimble-shaped in form, havineIr a semispherical end 23, in which are a plurality of perforations 24 suicient in number and so disposed that the gas will be discharged within the mantle at the sides of the nozzle, as well as at the top thereof, thereby distributing the flame more evenly over the mantle and especially at the base thereof. When this nozzle is used, it is made of su licient size so that the base will serve as an expansion-chamber instead of having to provide an expansion-chamber, as 12 in Fig. l.

It will thus be seenthat I have provided a very eliieient incandescent burner in a simple and inexpensive manner. Byaetual use I have found that I can save a considerable percentage of the gas required with the incandescent yburners in common use.

It is evident that many changes maybe made in the details of construction without departingl from the spirit of my invention, such as changingr the form of damper in the tube 18' or in substituting;r any well-known means for controlling the admission of air to the chamber G, and I reserve 'the right to make such changes.

Having;r thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. An incandescent burner comprising a' neath said nozzle, as forth. v

2. `An 'incandescent burner comprising a heating-chamber, a tube to admit air to said chamber; means to control the admission of air through said tube; means to convey the heated air from said chamber to the burnertube; means to admit gas to said burnertube; and a discharge-nozzle mounted above said burner-tube and heating-chamber, as and for the purpose set forth.

3. An incandescent burner comprising a heating-chamber.; a tube to admit air thereto; a damper mounted in said tube; means to convey the heated air to the burner-tube; means to admit gas to said burner-tube; and

and for the purpose set a discharge-nozzle mou nted above said burnertube and heatingchamber, as and for the purpose set forth.

4. An incandescent burner comprising a heating-ehamber; means for admitting air thereto; a burner-tube; means to convey the heated air from said chamber to saidburnertube; means to admit gas to said tube, and a thimble-shaped discharge-nozzle mounted above said burner-tube having a semispherical end with perforations in'the top and sides thereof, saidheating-chamber/being located beneath said nozzle, as and for lthe purpose set forth. 1

In testimony whereof I have signed my name to this specification. in the presence of two subscribing witnesses.

WILLIAM PARFREY. Witnessesz GRAHAM MCADAM, E. L. LIVINGsToNE'. 

